Unified Barlow Protocol (UP) in Cancer Survivors for Cognitive Impairments

April 28, 2026 updated by: Francisco Garcia Torres, Universidad de Córdoba

Effectiveness of Cognitive Rehabilitation and the Unified Barlow Protocol (UP) in Cancer Survivors for Cognitive Impairments: a Randomized Controlled Trial

Background: Cognitive impairment appears frequently in cancer survivors, negatively affecting the quality of life and emotional well-being of patients. This study compares the effectiveness of a well-established treatment (cognitive rehabilitation) with the Unified Protocol for Transdiagnostic Treatment of Emotional Disorders (UP) to alleviate these cognitive deficits and evaluate its effect on anxiety-depressive symptoms and the quality of life of survivors.

Methods: A three-arm randomized superiority clinical trial, with a pre-post and follow-up repeated measures and intergroup design with a 1:1:1 allocation ratio will be carried out. A hundred and twenty-three breast cancer survivors with mild to moderate cognitive impairment will be randomly assigned to one of the interventions of the study: cognitive rehabilitation intervention group, an intervention group with UP intervention, or a control group on the waiting list. The primary outcome is to observe a significant improvement in cognitive function and quality of life in both intervention groups and a significant decrease in emotional impairments in comparison with the waitlist group. These results will be maintained at six months of follow-up.

Discussion: The aim of this work is to test the efficacy of the Unified Barlow Protocol in reducing cognitive deficits in breast cancer survivors. The results of this trial may be useful in reducing the presence of cognitive problems in survivors and improving their emotional state and quality of life.

Study Overview

Study Type

Interventional

Enrollment (Estimated)

123

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Córdoba, Spain
        • Recruiting
        • Reina Sofia University Hospital
        • Contact:
          • Francisco Garcia Torres, PhD
          • Phone Number: 8847 +3495721
          • Email: z12gatof@uco.es
        • Principal Investigator:
          • Francisco García-Torres, PhD
      • Córdoba, Spain, 14005
        • Not yet recruiting
        • Hospital Universitario Reina Sofia
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Cancer diagnosis, stages I-III.
  • Cancer type: Breast.
  • Have received the last chemotherapy session in the last 6 months and a maximum of 6 years of treatment completion.
  • Probable or mild to moderate cognitive impairment (score between 26 and 10 points according to the MMSE).
  • Ability to be fluent in Spanish.
  • Not currently participating in another clinical trial.
  • Not currently receiving other psychological treatment

Exclusion Criteria:

  • Men and women aged > 70 years.
  • Diagnosis of cancer, stage IV or other types of cancer.
  • Last chemotherapy session < 6 months or > 6 years.
  • No cognitive impairment (MMSE score between 30 and 27 points).
  • Diagnosis of mental disorder (including substance abuse) prior to cancer diagnosis.
  • Relapse in disease after chemotherapy treatment is completed.
  • Neurodevelopmental Disorder Diagnosis.
  • Diagnosis of diseases that affect cognitive performance such as: hypertension, cardiac diseases, epilepsy, dementias, multiple sclerosis, functional disorders (fibromyalgia, chronic fatigue syndrome, irritable bowel syndrome, post-concussion syndrome, whiplash syndrome), CNS infections (HIV, encephalitis), metabolic disorders (diabetes, B12 deficiency), obstructive sleep apnea, brain damage (stroke, TBI, CNS cancer) and use of medications / substances that interfere with cognitive function such as pregabalin, gabapentin, topiramate, antidepressants tricyclics, sodium valproate, anticholinergics, methylphenidate, typical antipsychotics.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Neuropsychological treatment
Combination of different neuropsychological rehabilitation programs
combination of the programs tested by (Von Ah et al. 2012). These programs are, on the one hand, a cognitive training adapted from the Advanced Cognitive Training for Independent and Vital Elderly (ACTIVE) (Jobe et al., 2001) and, on the other, a processing speed training using the Insight program (from Posit Science) (Mahncke et al., 2006). The first consists of teaching patients memorization techniques, and the second consists of a series of exercises on information processing of varying difficulty. These exercises automatically adjust your difficulty to maintain an 85% rate of return. Treatment is carried out in groups of 10 cancer survivors. It consists of 10 weekly sessions of 2 hours each (the first hour for memory training and the second for processing speed exercises). In order to improve the adherence to treatment of the participants, emails and telephone text messages will be sent with reminders of appointments and tasks to be performed.
Experimental: Unified Protocol for the Transdiagnostic Treatment of Emotional Disorders (PU).
This intervention focuses on a deficit in emotional regulation common in all emotional disorders (ED).
This intervention focuses on a deficit in emotional regulation common in all emotional disorders (ED). Therefore, it focuses on the adaptive value of emotions and promotes tolerance to intense emotions as well as the identification and modification of dysfunctional emotional regulation strategies. Patients receive 10 group therapy sessions (3-5 cancer survivors per group) with all PU modules (Barlow et al., 2011). The Spanish version of the therapist's guide and the patient's workbook are used (Barlow et al., 2015). All patients receive the workbook to help them read the contents of each session, do the recommended exercises between sessions, and to help them once the treatment is finished. The treatment lasts 10 weeks (one session a week). As in the previous intervention group, emails and telephone text messages will be used with reminders of appointments and tasks to be carried out.
Other: Waitlist group
The control group will receive the Adapted Mnesic Cognitive Training (ACTIVE) (Jobe, et al., 2001), as well as the Insight (Posit Science) program (Mahncke et al., 2006) once the interventions in groups 1 and 2 have been completed.
The control group will receive the Adapted Mnesic Cognitive Training (ACTIVE) (Jobe, et al., 2001), as well as the Insight (Posit Science) program (Mahncke et al., 2006) once the interventions in groups 1 and 2 have been completed.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Functional assessment of Cancer Therapy-Cognitive Function, version 3. (FACT-Cog).
Time Frame: Change of mean scores from baseline to immediately after intervention
This is an instrument developed to assess chemotherapy-induced cognitive problems in cancer patients. It includes four different subscales: Perceived Cognitive Impairments (score range from 0-72), Impact of Perceived Cognitive Impairments on QoL (score range from 0-16), Comments from Others (score range from 0-16), and Perceived Cognitive Abilities (scores range from 0-28) that are scored using a Likert scale of five points from 0 (never) to 4 (several times a day). The higher the score, the better the cognitive function
Change of mean scores from baseline to immediately after intervention
Memory Failures Everyday (MFE-30).
Time Frame: Change of mean scores from baseline to immediately after intervention
It is a unifactorial questionnaire that measures a single construct: "cognitive complaints". It is made up of 30 items that are answered on a 5-point Likert scale from 1 (never) to 4 (always or almost always) with higher scores indicate poorer memory function. Scores are from 1 to with higher scores indicating higher memory impairments
Change of mean scores from baseline to immediately after intervention
Hopkins Verbal Learning Test-Revised (HVLT-R).
Time Frame: Change of mean scores from baseline to immediately after intervention
This test measures primary and secondary memory, the rate of verbal learning throughout three trials, as well as three forms of mnesic organization: serial ordering, semantic grouping, and subjective organization. The test consists of a list of 12 words that are presented orally at a speed of one word for every two seconds. a higher number of words is interpreted as better recall and recognition
Change of mean scores from baseline to immediately after intervention
Trail Making Test (TMT).
Time Frame: Change of mean scores from baseline to immediately after intervention
The TMT consists of two parts: Part A measures attention, processing speed, visual search, and working memory; on the other hand, part B is used to measure attention, executive function (cognitive flexibility, ability to change tasks, coordination of categories), working memory, visual-motor skills and processing speed. A greater time to complete the tasks is interpreted as a greater deterioration
Change of mean scores from baseline to immediately after intervention
Controlled Oral Word Association Test (COWAT).
Time Frame: Change of mean scores from baseline to immediately after intervention
The COWAT is a test that measures verbal fluency and is a recognized and sensitive indicator of cognitive functioning. the participant has to say as many words as possible in one minute, and a greater number of words is associated with greater verbal fluency.
Change of mean scores from baseline to immediately after intervention

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Hospital Anxiety and Depression Scale (HADS)
Time Frame: Change of mean scores from baseline to immediately after intervention]
This scale is used to assess anxiety and depression in a hospital settings. It is made up of 14 items (7 for anxiety and 7 for depression), which are answered on a scale from 0 to 3, with maximum values of 21 in each of the subscales. Higher scores indicates the presence of anxiety and depression.
Change of mean scores from baseline to immediately after intervention]
Quality of Life scores using EORTC QLQ C-30.
Time Frame: Change of mean scores from baseline to immediately after intervention]
EORTC QLQ C-30 (version 3), this is an instrument developed to assess the quality of life in cancer patients using 30 questions that refer to the quality of life experienced by the patient during the last week. The first twenty-eight items include questions about different symptoms and are answered on a scale that ranges from 1 (not at all) to 4 (a lot), while the last two ask patients about the perception of their global health and quality of life in a scale from 1 (terrible) to 7 (excellent). The different items are grouped into functional scales (physical / role / emotional / cognitive / social and global) and symptom scale (fatigue / nausea and vomiting / dyspnea / sleep problems / loss of appetite / constipation / diarrhea and financial impact ). Higher scores indicates a better function.
Change of mean scores from baseline to immediately after intervention]

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 25, 2021

Primary Completion (Estimated)

December 30, 2026

Study Completion (Estimated)

December 31, 2028

Study Registration Dates

First Submitted

December 28, 2021

First Submitted That Met QC Criteria

March 12, 2022

First Posted (Actual)

March 21, 2022

Study Record Updates

Last Update Posted (Actual)

May 5, 2026

Last Update Submitted That Met QC Criteria

April 28, 2026

Last Verified

April 1, 2026

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

not applicable for this trial

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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